The underlying problem in Gaucher disease is ____
a. the spontaneous breakdown of red blood cells
b. the accumulation of fat in white blood cells
c. the breakdown of the myelin sheath around nerves
d. a hypertrophied spleen
e. the lack of critical liver enzymes
b
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One effect of type 1 diabetes is ____
a. ketosis b. storage of proteins
c. secretion of pancreatic juices d. metabolism of glucose e. fat storage
The genetic code was originally deciphered, in part, by experiments in which synthetic polynucleotides with repeating sequences were used as mRNAs to direct protein synthesis in cell-free extracts. Under these conditions, ribosomes could be made to start translation anywhere within the RNA molecules, with no start codon necessary. What peptide would be made by translation from a synthetic mRNA made of the repeating dinucleotide CGCG...?
A. a polymer of alanine: Ala-Ala-Ala... B. a polymer of arginine: Arg-Arg-Arg... C. the peptide Met-Arg-Ala-Arg-Ala... D. a peptide containing alternating arginines and alanines E. a polymer of arginine plus a polymer of alanine
When electrons move closer to a more electronegative atom, what happens?
A) Energy is released. B) Energy is consumed. C) The more electronegative atom is reduced. D) The more electronegative atom is oxidized. E) A and C are correct.
A substrate binding to an enzyme is most similar to a signal molecule binding to a
A. second messenger. B. kinase. C. transcriptional factor. D. receptor. E. G-protein.